mtfsfi.c 463 B

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  1. // SPDX-License-Identifier: GPL-2.0
  2. #include <linux/types.h>
  3. #include <linux/errno.h>
  4. #include <linux/uaccess.h>
  5. #include <asm/sfp-machine.h>
  6. #include <math-emu/soft-fp.h>
  7. int
  8. mtfsfi(unsigned int crfD, unsigned int IMM)
  9. {
  10. u32 mask = 0xf;
  11. if (!crfD)
  12. mask = 9;
  13. __FPU_FPSCR &= ~(mask << ((7 - crfD) << 2));
  14. __FPU_FPSCR |= (IMM & 0xf) << ((7 - crfD) << 2);
  15. #ifdef DEBUG
  16. printk("%s: %d %x: %08lx\n", __func__, crfD, IMM, __FPU_FPSCR);
  17. #endif
  18. return 0;
  19. }